Emmanuel Macron told French newspaper Journal du Dimanche that EDF will now make the final decision in September.
Last month Macron said the decision would be made in May, after it was postponed from its expected date in March.
A decision on the £18bn ($26bn) project has been subject to delays as EDF, which is 85 per cent state-owned, struggled to outline how it will fund the project.
However, on Friday EDF said in a statement that it plans to raise €4bn ($4.5bn) through a “significant recapitalization” involving up to €3bn provided by the French government.
“Confirmation of the significant recapitalization of EDF agreed by the Board makes it possible for EDF to proceed with its strategic investment programme – including Hinkley Point C,” the company said.
A legal opinion issued last week by Greenpeace has suggested that any French government financial support to EDF to enable the company to build Hinkley Point C would almost certainly be blocked by the European Commission, as it would constitute a breach of state aid guidelines.